Pope Sisinnius (c. 650 – 4 February 708) was Pope from 15 January to his death in 708.[1]

A Syrian by birth,[2] Sisinnius' father's name was John.[3] The paucity of donations to the papacy during his reign (42 pounds of gold and 310 pounds of silver, a fraction of the personal donations of other contemporary pontiffs) indicate that he was probably not from the aristocracy.[4]

Sisinnius remained pope for just twenty days.[5] According to the Catholic Encyclopedia, "although he was so afflicted with gout that he was unable even to feed himself, he is nevertheless said to have been a man of strong character, and to have been able to take thought for the good of the city".[3] Among his few acts as pope was the consecration of a bishop for Corsica.[3] He also ordered "that lime be burned in order to restore portions" of the walls of Rome.[6] The restoration of the walls planned by Sisinnius was carried out by Pope Gregory II.[7] The book True Christianity: The Catholic Way credits him with defending the Church against the Lombards and Saracens.[8]